Patents by Inventor David M. Lewis

David M. Lewis has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20220325109
    Abstract: A coating composition, a coating layer, and a coating system, and a method for making a and using the same are provided. The coating system comprises a flop index of 2 or greater and comprises a coating layer formed by a coating composition. The coating composition comprises a film-forming resin and a pigment composition. The pigment composition comprises 50% or greater by weight radar transmissive pigment based on the total weight of the pigment composition and no greater than 50% by weight electrically conductive pigment based on the total weight of the pigment composition. The coating system has a radar signal transmission of 70% or greater. The coating system has a CIELAB color difference, ?E, compared to a color-matched coating system of no greater than 4, as measured at 110°, using a multi-angle spectrophotometer with D65 Illumination and 10° observer.
    Type: Application
    Filed: August 7, 2020
    Publication date: October 13, 2022
    Applicant: PPG Industries Ohio, Inc.
    Inventors: Eldon L. Decker, Jason R. Lewis, Zachary J. Brown, David M. Hordijk, Calum H. Munro
  • Patent number: 11194342
    Abstract: A robot lawnmower includes a body and a drive system carried by the body and configured to maneuver the robot across a lawn. The robot also includes a grass cutter and a swath edge detector, both carried by the body. The swath edge detector is configured to detect a swath edge between cut and uncut grass while the drive system maneuvers the robot across the lawn while following a detected swath edge. The swath edge detector includes a calibrator that monitors uncut grass for calibration of the swath edge detector. In some examples, the calibrator comprises a second swath edge detector.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: December 7, 2021
    Assignee: iRobot Corporation
    Inventors: Paul E. Sandin, Joseph L. Jones, Daniel N. Ozick, David A. Cohen, David M. Lewis, Jr., Clara Vu, Zivthan A. Dubrovsky, Joshua B. Preneta, Jeffrey W. Mammen, Duane L. Gilbert, Jr., Tony L. Campbell, John Bergman
  • Patent number: 10183372
    Abstract: Thread repair tools having (i) a disc-shaped member with an axis of rotation extending through and dissecting first and second major surfaces of the disc-shaped member, (ii) a shaft fixedly connected to or fixedly connectable to the disc-shaped member, with the shaft extending from the second major surface of the disc-shaped member along the axis of rotation; and (iii) an abrasive surface along an outer periphery of the disc-shaped member are disclosed. Methods of making the thread repair tools, and methods of using the thread repair tools are also disclosed. Methods of using the thread repair tools include a method of: (i) connecting the thread repair tool to a hand-held powered device capable of rotating the thread repair tool along the axis of rotation of the thread repair tool, and (ii) abrading an object with the disc-shaped member of the thread repair tool as the thread repair tool is rotated along the axis of rotation by the hand-held powered device.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: January 22, 2019
    Inventors: Terry A. Lewis, Travis R. Lewis, David M. Lewis
  • Publication number: 20180348787
    Abstract: A robot lawnmower includes a body and a drive system carried by the body and configured to maneuver the robot across a lawn. The robot also includes a grass cutter and a swath edge detector, both carried by the body. The swath edge detector is configured to detect a swath edge between cut and uncut grass while the drive system maneuvers the robot across the lawn while following a detected swath edge. The swath edge detector includes a calibrator that monitors uncut grass for calibration of the swath edge detector. In some examples, the calibrator comprises a second swath edge detector.
    Type: Application
    Filed: July 27, 2018
    Publication date: December 6, 2018
    Inventors: Paul E. Sandin, Joseph L. Jones, Daniel N. Ozick, David A. Cohen, David M. Lewis, JR., Clara Vu, Zivthan A. Dubrovsky, Joshua B. Preneta, Jeffrey W. Mammen, Duane L. Gilbert, JR., Tony L. Campbell, John Bergman
  • Patent number: 10037038
    Abstract: A robot lawnmower includes a body and a drive system carried by the body and configured to maneuver the robot across a lawn. The robot also includes a grass cutter and a swath edge detector, both carried by the body. The swath edge detector is configured to detect a swath edge between cut and uncut grass while the drive system maneuvers the robot across the lawn while following a detected swath edge. The swath edge detector includes a calibrator that monitors uncut grass for calibration of the swath edge detector. In some examples, the calibrator comprises a second swath edge detector.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: July 31, 2018
    Assignee: iRobot Corporation
    Inventors: Paul E. Sandin, Joseph L. Jones, Daniel N. Ozick, David A. Cohen, David M. Lewis, Jr., Clara Vu, Zivthan A. Dubrovsky, Joshua B. Preneta, Jeffrey W. Mammen, Duane L. Gilbert, Jr., Tony L. Campbell, John Bergman
  • Patent number: 9713302
    Abstract: An autonomous coverage robot system includes an active boundary responder comprising a wire powered with a modulated current placed along a perimeter of a property, at least one passive boundary responder placed on a property interior circumscribed by the active boundary responder, and an autonomous coverage robot. The robot includes a drive system carried by a body and configured to maneuver the robot across the property interior. The robot includes a signal emitter emitting a signal, where the passive boundary responder is responsive to the signal and a boundary responder detection system carried by the body. The boundary responder detector is configured to redirect the robot both in response to the responder detection system detecting an active boundary responder and in response to detecting a passive boundary responder.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: July 25, 2017
    Assignee: iRobot Corporation
    Inventors: Paul E. Sandin, Joseph L. Jones, Daniel N. Ozick, David A. Cohen, David M. Lewis, Jr., Clara Vu, Zivthan A. Dubrovsky, Joshua B. Preneta, Jeffrey W. Mammen, Duane L. Gilbert, Jr., Tony L. Campbell, John Bergman, Mark J. Chiappetta
  • Publication number: 20170198223
    Abstract: The present invention relates to an integrated method for processing algal biomass comprising a marine algal strain or a freshwater (non-marine) algal strain or a plurality of marine algal strains or a plurality of freshwater (non-marine) algal strains or any combination thereof or other carbonaceous feedstocks like biosolids or any combination of algae/algae mixtures and carbonaceous feedstocks to produce biofuel. The method includes subjecting the algae/algal mixture to hydrothermal liquefaction/co-liquefaction using sub-critical water to produce a biocrude. The biocrude is pretreated using a renewable biocatalyst to remove impurities which include Nitrogen (N), Sulfur (S), Oxygen (O) and salts and the pretreated biocrude is mixed with heteroatoms a petrocrude to form a biocrude-petrocrude blend. The biocrude-petrocrude blend is distilled and the distillate fractions are treated using the renewable biocatalyst to remove impurities and finally hydrotreated to produce fractions biofuels.
    Type: Application
    Filed: June 24, 2015
    Publication date: July 13, 2017
    Inventors: Senthil Chinnasamy, Sailendra Bhaskar, Jeganathan Nallasivam, Sachitra Kumar Ratha, David M. Lewis, Arunachalam Meenakshisundaram, Melcureraj Lavanya, Vaidhyanathan Selvavathi
  • Publication number: 20170066100
    Abstract: Thread repair tools are disclosed. Methods of making thread repair tools, and methods of using thread repair tools are also disclosed.
    Type: Application
    Filed: July 22, 2016
    Publication date: March 9, 2017
    Inventors: Terry A. Lewis, Travis R. Lewis, David M. Lewis
  • Publication number: 20150234385
    Abstract: A robot lawnmower includes a body and a drive system carried by the body and configured to maneuver the robot across a lawn. The robot also includes a grass cutter and a swath edge detector, both carried by the body. The swath edge detector is configured to detect a swath edge between cut and uncut grass while the drive system maneuvers the robot across the lawn while following a detected swath edge. The swath edge detector includes a calibrator that monitors uncut grass for calibration of the swath edge detector. In some examples, the calibrator comprises a second swath edge detector.
    Type: Application
    Filed: April 28, 2015
    Publication date: August 20, 2015
    Inventors: Paul E. Sandin, Joseph L. Jones, Daniel N. Ozick, David A. Cohen, David M. Lewis, JR., Clara Vu, Zivthan A. Dubrovsky, Joshua B. Preneta, Jeffrey W. Mammen, Duane L. Gilbert, JR., Tony L. Campbell, John Bergman
  • Patent number: 9043952
    Abstract: A robot lawnmower includes a body and a drive system carried by the body and configured to maneuver the robot across a lawn. The robot also includes a grass cutter and a swath edge detector, both carried by the body. The swath edge detector is configured to detect a swath edge between cut and uncut grass while the drive system maneuvers the robot across the lawn while following a detected swath edge. The swath edge detector includes a calibrator that monitors uncut grass for calibration of the swath edge detector. In some examples, the calibrator comprises a second swath edge detector.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: June 2, 2015
    Assignee: iRobot Corporation
    Inventors: Paul E. Sandin, Joseph L. Jones, Daniel N. Ozick, David A. Cohen, David M. Lewis, Jr., Clara Vu, Zivthan A. Dubrovsky, Joshua B. Preneta, Jeffrey W. Mammen, Duane L. Gilbert, Tony L. Campbell, John Bergman
  • Patent number: 9043953
    Abstract: A robot lawnmower includes a body and a drive system carried by the body and configured to maneuver the robot across a lawn. The robot also includes a grass cutter and a swath edge detector, both carried by the body. The swath edge detector is configured to detect a swath edge between cut and uncut grass while the drive system maneuvers the robot across the lawn while following a detected swath edge. The swath edge detector includes a calibrator that monitors uncut grass for calibration of the swath edge detector. In some examples, the calibrator comprises a second swath edge detector.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: June 2, 2015
    Assignee: iRobot Corporation
    Inventors: Paul E. Sandin, Joseph L. Jones, Daniel N. Ozick, David A. Cohen, David M. Lewis, Jr., Clara Vu, Zivthan A. Dubrovsky, Joshua B. Preneta, Jeffrey W. Mammen, Duane L. Gilbert, Tony L. Campbell, John Bergman
  • Patent number: 8954193
    Abstract: A robot lawnmower includes a body and a drive system carried by the body and configured to maneuver the robot across a lawn. The robot also includes a grass cutter and a swath edge detector, both carried by the body. The swath edge detector is configured to detect a swath edge between cut and uncut grass while the drive system maneuvers the robot across the lawn while following a detected swath edge. The swath edge detector includes a calibrator that monitors uncut grass for calibration of the swath edge detector. In some examples, the calibrator comprises a second swath edge detector.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: February 10, 2015
    Assignee: iRobot Corporation
    Inventors: Paul E. Sandin, Joseph L. Jones, Daniel N. Ozick, David A. Cohen, David M. Lewis, Jr., Clara Vu, Zivthan A. Dubrovsky, Joshua B. Preneta, Jeffrey W. Mammen, Duane L. Gilbert, Tony L. Campbell, John Bergman
  • Publication number: 20150006015
    Abstract: An autonomous coverage robot system includes an active boundary responder comprising a wire powered with a modulated current placed along a perimeter of a property, at least one passive boundary responder placed on a property interior circumscribed by the active boundary responder, and an autonomous coverage robot. The robot includes a drive system carried by a body and configured to maneuver the robot across the property interior. The robot includes a signal emitter emitting a signal, where the passive boundary responder is responsive to the signal and a boundary responder detection system carried by the body. The boundary responder detector is configured to redirect the robot both in response to the responder detection system detecting an active boundary responder and in response to detecting a passive boundary responder.
    Type: Application
    Filed: September 18, 2014
    Publication date: January 1, 2015
    Inventors: Paul E. Sandin, Joseph L. Jones, Daniel N. Ozick, David A. Cohen, David M. Lewis, JR., Clara Vu, Zivthan A. Dubrovsky, Joshua B. Preneta, Jeffrey W. Mammen, Duane L. Gilbert, JR., Tony L. Campbell, John Bergman, Mark J. Chiappetta
  • Patent number: 8868237
    Abstract: An autonomous coverage robot system includes an active boundary responder comprising a wire powered with a modulated current placed along a perimeter of a property, at least one passive boundary responder placed on a property interior circumscribed by the active boundary responder, and an autonomous coverage robot. The robot includes a drive system carried by a body and configured to maneuver the robot across the property interior. The robot includes a signal emitter emitting a signal, where the passive boundary responder is responsive to the signal and a boundary responder detection system carried by the body. The boundary responder detector is configured to redirect the robot both in response to the responder detection system detecting an active boundary responder and in response to detecting a passive boundary responder.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: October 21, 2014
    Assignee: iRobot Corporation
    Inventors: Paul E. Sandin, Joseph L. Jones, Daniel N. Ozick, David A. Cohen, David M. Lewis, Jr., Clara Vu, Zivthan A. Dubrovsky, Joshua B. Preneta, Jeffrey W. Mammen, Duane L. Gilbert, Jr., Tony L. Campbell, John Bergman, Mark J. Chiappetta
  • Patent number: 8781627
    Abstract: A robot lawmnower includes a body, a drive system carried by the body, at least one caster wheel supporting the body, a grass cutter carried by the body, a controller in communication with the drive system, and a bump sensor in communication with the controller. The controller is configured to maneuver the robot to turn in place and to redirect the robot in response to the bump sensor sensing contact with an obstacle. The drive system is configured to maneuver the robot across a lawn and includes differentially driven right and left drive wheels positioned rearward of a transverse center axis defined by the body. The at least one caster wheel is positioned substantially forward of the right and left drive wheels, and the grass cutter is positioned at least partially forward of the right and left drive wheels and at least partially behind the at least one caster wheel.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: July 15, 2014
    Assignee: iRobot Corporation
    Inventors: Paul E. Sandin, Joseph L. Jones, Daniel N. Ozick, David A. Cohen, David M. Lewis, Jr., Clara Vu, Zivthan A. Dubrovsky, Joshua B. Preneta, Jeffrey W. Mammen, Duane L. Gilbert, Jr., Tony L. Campbell, John Bergman, Mark J. Chiappetta
  • Publication number: 20140102062
    Abstract: A robot lawnmower includes a body and a drive system carried by the body and configured to maneuver the robot across a lawn. The robot also includes a grass cutter and a swath edge detector, both carried by the body. The swath edge detector is configured to detect a swath edge between cut and uncut grass while the drive system maneuvers the robot across the lawn while following a detected swath edge. The swath edge detector includes a calibrator that monitors uncut grass for calibration of the swath edge detector. In some examples, the calibrator comprises a second swath edge detector.
    Type: Application
    Filed: December 12, 2013
    Publication date: April 17, 2014
    Applicant: IROBOT CORPORATION
    Inventors: Paul E. Sandin, Joseph L. Jones, Daniel N. Ozick, David A. Cohen, David M. Lewis, JR., Clara Vu, Zivthan A. Dubrovsky, Joshua B. Preneta, Jeffrey W. Mammen, Duane L. Gilbert, Tony L. Campbell, John Bergman
  • Publication number: 20140102061
    Abstract: A robot lawnmower includes a body and a drive system carried by the body and configured to maneuver the robot across a lawn. The robot also includes a grass cutter and a swath edge detector, both carried by the body. The swath edge detector is configured to detect a swath edge between cut and uncut grass while the drive system maneuvers the robot across the lawn while following a detected swath edge. The swath edge detector includes a calibrator that monitors uncut grass for calibration of the swath edge detector. In some examples, the calibrator comprises a second swath edge detector.
    Type: Application
    Filed: December 12, 2013
    Publication date: April 17, 2014
    Applicant: IROBOT CORPORATION
    Inventors: Paul E. Sandin, Joseph L. Jones, Daniel N. Ozick, David A. Cohen, David M. Lewis, JR., Clara Vu, Zivthan A. Dubrovsky, Joshua B. Preneta, Jeffrey W. Mammen, Duane L. Gilbert, Tony L. Campbell, John Bergman
  • Publication number: 20140095008
    Abstract: A robot lawnmower includes a body and a drive system carried by the body and configured to maneuver the robot across a lawn. The robot also includes a grass cutter and a swath edge detector, both carried by the body. The swath edge detector is configured to detect a swath edge between cut and uncut grass while the drive system maneuvers the robot across the lawn while following a detected swath edge. The swath edge detector includes a calibrator that monitors uncut grass for calibration of the swath edge detector. In some examples, the calibrator comprises a second swath edge detector.
    Type: Application
    Filed: December 12, 2013
    Publication date: April 3, 2014
    Applicant: iRobot Corporation
    Inventors: Paul E. Sandin, Joseph L. Jones, Daniel N. Ozick, David A. Cohen, David M. Lewis, JR., Clara Vu, Zivthan A. Dubrovsky, Joshua B. Preneta, Jeffrey W. Mammen, Duane L. Gilbert, Tony L. Campbell, John Bergman
  • Patent number: 8634960
    Abstract: A robot lawnmower includes a body and a drive system carried by the body and configured to maneuver the robot across a lawn. The robot also includes a grass cutter and a swath edge detector, both carried by the body. The swath edge detector is configured to detect a swath edge between cut and uncut grass while the drive system maneuvers the robot across the lawn while following a detected swath edge. The swath edge detector includes a calibrator that monitors uncut grass for calibration of the swath edge detector. In some examples, the calibrator comprises a second swath edge detector.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: January 21, 2014
    Assignee: iRobot Corporation
    Inventors: Paul E. Sandin, Joseph L. Jones, Daniel N. Ozick, David A. Cohen, David M. Lewis, Jr., Clara Vu, Zivthan A. Dubrovsky, Joshua B. Preneta, Jeffrey W. Mammen, Duane L. Gilbert, Jr., Tony L. Campbell, John Bergman
  • Patent number: 8012595
    Abstract: An appliance is provided having a panel formed of a magnetizable material and a polyester lamination film adhered to an outer surface of the panel, wherein the polyester lamination film provides a stainless steel appearance to the panel. The polyester lamination film may be a polyester film layer with a backside brushed, a vacuum metallized aluminum layer deposited on the backside of the polyester film layer, and a tinted coating layer provided on a front side of the polyester film layer. The tinted coating layer may be colored to provide a correct color rendition of the metallized aluminum layer as stainless steel, as seen through said polyester lamination film. A strippable film layer may be applied over the polyester lamination film to protect the panel during manufacture. The magnetizable material of the panel may be rolled steel. The panel may have bends in its surface.
    Type: Grant
    Filed: November 2, 2004
    Date of Patent: September 6, 2011
    Assignee: Whirlpool Corporation
    Inventors: Kevin R. Leatherwood, Franklin G. Katje, David L. Benefiel, David E. Elsner, David M. Lewis